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A kind of production method of environment-friendly composite sludge conditioner

A technology for sludge conditioning and production methods, applied in the direction of sludge treatment, water/sludge/sewage treatment, chemical instruments and methods, etc., can solve the problems of high water content in sludge and inability to improve sludge dehydration, and achieve The preparation process is simple, the adsorption performance is reduced, and the conditioning is convenient.

Active Publication Date: 2021-12-07
河南永泽环境科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] For example, the patent of application publication number CN Invention 107686225 Invention A discloses a composite sludge conditioner for sludge dewatering, which consists of 10%-20% oxidant and 30%-60% sludge conditioner %, 25% to 55% of inorganic flocculation inventive agent, and 5% to 10% of cationic polyacrylamide. In the invention, the oxidizing agent is at least one of sodium ferrate, potassium ferrate, sodium percarbonate, and sodium hypochlorite. Mud loosening conditioner is at least one invention among fly ash, calcined kaolin, and magnetite tailings powder with a particle size of 50-200 meshes. At least one of aluminum and iron acids, but the composite sludge conditioner used for sludge dehydration cannot fully exert the conditioning effect of each substance, cannot improve the dehydration of sludge, and the water content of sludge is relatively high

Method used

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  • A kind of production method of environment-friendly composite sludge conditioner

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] The invention provides a technical solution: a production method of an environmentally friendly composite sludge conditioner, comprising the following steps:

[0019] (1) Preparation of reagent A: Dissolve polydimethyldiallyl ammonium chloride and polydichloroethyl ether tetramethylethylenediamine in pure water at 60°C, stir for 1 hour, and cool to obtain A Reagents, wherein by mass percentage, polydimethyldiallylammonium chloride accounts for 15%, polydichloroethyl ether tetramethylethylenediamine accounts for 50%, and the rest is pure water;

[0020] (2) Preparation of B reagent: A certain amount of sodium alginate and chitosan are respectively added into 1% acetic acid solution by mass percentage of acetic acid, configured into 2g / L sodium alginate solution and chitosan solution, and then equal volumes Pour the sodium alginate solution into the chitosan solution, stir continuously for 4 hours, ultrasonically disperse for 15-30 minutes, and then add acetone. After pre...

Embodiment 2

[0023] The sludge conditioner provided by this embodiment has the same preparation process as in Example 1, only adjusting the mass ratio of the following preparation raw materials:

[0024] (1) Prepare A reagent: by mass percentage, polydimethyldiallylammonium chloride accounts for 10%, polydichloroethyl ether tetramethylethylenediamine accounts for 30%, epichlorohydrin-dimethylamine 30% copolymer, the rest is pure water;

[0025] (2) Preparation of reagent B: sodium alginate-chitosan polymer accounts for 70%, and fly ash accounts for 30%;

[0026] After the sludge conditioner provided in this example is used for sludge concentration and before deep dehydration treatment, the water content of the sludge to be treated is first detected. The results show that the water content of the sludge to be treated is 97.5%. Based on the amount of absolute dry sludge, first sprinkle the sludge conditioner A reagent, the effective dosage of A reagent is 1% of the sludge mass, after mixing...

Embodiment 3

[0028] The sludge conditioner provided by this embodiment has the same preparation process as in Example 1, only adjusting the mass ratio of the following preparation raw materials:

[0029] (1) Preparation of reagent A: by mass percentage, polydimethyldiallylammonium chloride accounts for 15%, epichlorohydrin-dimethylamine copolymer 50%, and the rest is pure water;

[0030] (2) Preparation of reagent B: sodium alginate-chitosan polymer accounts for 60%, and fly ash accounts for 40%;

[0031] After the sludge conditioner provided in this example is used for sludge concentration and before deep dehydration treatment, the water content of the sludge to be treated is first detected. The results show that the water content of the sludge to be treated is 97.5%. Based on the amount of absolute dry sludge, first sprinkle the sludge conditioner A reagent, the effective dosage of A reagent is 1% of the sludge mass, after mixing evenly, keep stirring for 10 minutes, then add into B reag...

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Abstract

The invention discloses a production method of an environment-friendly composite sludge conditioner, comprising the following steps: (1) Preparation of reagent A: at 40-60°C, polydimethyldiallylammonium chloride, polydiallyl chloride Ethyl ether tetramethylethylenediamine and epichlorohydrin-dimethylamine copolymer are dissolved in pure water, stirred for 1-2h, and cooled to become A reagent; (2) Preparation of B reagent: a certain amount of alginic acid Sodium and chitosan are respectively added to a certain amount of acetic acid solution, configured into sodium alginate solution and chitosan solution, and then sodium alginate and chitosan are compounded to obtain a composite agent of polymer and fly ash, which is B Reagent, the environmental protection composite sludge conditioner of the present invention changes the sludge characteristics through the synergistic conditioning effect of the two compounds, and greatly enhances the sludge dehydration; and each component in the conditioner is relatively environmentally friendly, non-toxic and harmless, and the preparation process is easy.

Description

technical field [0001] The invention relates to the technical field of sludge dehydration treatment, in particular to a production method of an environment-friendly composite sludge conditioner. Background technique [0002] Sludge is the product of sewage treatment, which is an extremely complex heterogeneous body composed of organic debris, bacterial cells, inorganic particles, colloidal sludge, etc. The main characteristics of sludge are high water content (up to 99%), high content of organic matter, easy to rot and smell, and the particles are finer, the specific gravity is smaller, and it is in a colloidal liquid state. It is a thick substance between liquid and solid, which can be transported by pump, but it is difficult to separate solid and liquid by sedimentation. As the final product of water treatment, sludge has the characteristics of complex composition, high water content, high organic matter content, strong hydrophilicity, difficulty in dehydration, easy to s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F11/147
CPCC02F11/147
Inventor 张明慧王彦堂刘畅师建立
Owner 河南永泽环境科技有限公司
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